System and method for operating a turbo-charged engine
First Claim
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1. A method, comprising:
- providing a first fuel injection schedule having one or more injections per cylinder per compression stroke at a first discrete power level selected from a plurality of discrete power levels of an engine; and
providing a second fuel injection schedule having a plurality of injections per cylinder per compression stroke at a second discrete power level selected from the plurality of discrete power levels of the engine, wherein the first and second fuel injection schedules comprise different injection characteristics from one another.
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Abstract
In certain embodiments, there is provided a method of providing a first fuel injection schedule having one or more injections per cylinder per compression stroke at a first discrete power level selected from a plurality of discrete power levels of an engine. The method further includes providing a second fuel injection schedule having a plurality of injections per cylinder per compression stroke at a second discrete power level selected from the plurality of discrete power levels of the engine, wherein the first and second fuel injection schedules comprise different injection characteristics from one another.
26 Citations
25 Claims
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1. A method, comprising:
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providing a first fuel injection schedule having one or more injections per cylinder per compression stroke at a first discrete power level selected from a plurality of discrete power levels of an engine; and providing a second fuel injection schedule having a plurality of injections per cylinder per compression stroke at a second discrete power level selected from the plurality of discrete power levels of the engine, wherein the first and second fuel injection schedules comprise different injection characteristics from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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performing a first injection schedule of a fuel injection into an engine cylinder at a first discrete power level of an engine to reduce specific fuel consumption, or nitrogen oxide emissions, and performing a second injection schedule of the fuel injection into the engine cylinder at a second discrete power level of the engine to reduce particulate matter emissions. - View Dependent Claims (12, 13, 14)
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15. A system, comprising:
a controller configured to perform a first injection schedule of a fuel injection into an engine cylinder at a first discrete power level of an engine and, configured to perform a second injection schedule of the fuel injection into the engine cylinder at a second discrete power level of the engine. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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a compression-ignition engine; a power control mechanism comprising a plurality of discrete notches; and a fuel-injection system coupled to the compression-ignition engine, wherein the fuel-injection system is configured to inject a pilot fuel amount followed by a majority fuel amount per cylinder per compression stroke at a first discrete notch of the plurality of discrete notches, and configured to inject a plurality of substantially equal fuel amounts per cylinder per compression stroke at a second discrete notch of the plurality of discrete notches, wherein the first discrete notch is higher than the second discrete notch. - View Dependent Claims (24, 25)
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Specification